Senior Technical Architect

Senior Technical Architect

PAYE Rate: £508.77 per day
Umbrella Rate: £652.82 per day
Contract | Inside IR35
Duration: 6 months initially (with potential extensions up to 24 months)
Hybrid – Milton Keynes (approx. 60% onsite)

We’re supporting a major UK government organisation delivering critical national security capabilities and are seeking an experienced Senior Technical Architect to join a high-profile, secure programme.

You will:

• Work directly with key customers to deliver a mission-critical national security product
• Translate business requirements into secure, scalable technical solutions
• Lead technical workshops with stakeholders and customers
• Provide senior technical oversight and 4th-line support to engineering teams
• Produce and maintain high-level and low-level technical designs
• Assess the impact of functional, capability, and security changes
• Review and approve technical change requests in line with architectural standards
• Support CTO-level governance and assurance activities
• Evaluate emerging technologies and articulate options, risks, and cost benefits

• Excellent stakeholder engagement skills with the ability to communicate complex technical concepts clearly
• Proven experience as a Technical / Solution / Infrastructure Architect within secure environments
• Strong technical background across Microsoft & Linux server environments, Networking technologies, Hybrid cloud architectures, VMware platforms (VCD, vSAN, NSX), Gateways, PKI, and email platforms, SASE architectures, Cisco and Palo Alto technologies
• Experience producing architectural documentation (options assessments, HLDs, LLDs)
• Dev Sec Ops  experience, including CI/CD and automation
• Cloud design and migration experience (Azure/M365 and AWS)
• Solid understanding of UK government security frameworks (NCSC, GDS, NIST, CIS, Cyber Essentials)
• Experience with security tooling, auditing, and compliance

• Experience working in matrixed or complex organisational structures
• Infrastructure as Code (IaC), containerisation, and microservices

Candidates submitted for this role must be British nationals, to confirm:

• They are a British citizen or hold dual nationality, and
• They have been a resident in the UK for at least two of the last 5 years

Due to the nature of this work Government security clearance if not already held will need to be obtained. The minimum clearance required for this role is SC. (Although advantageous, it is not a requirement that an individual already holds Security Clearance.) Candidates who do not currently hold clearance must be able to obtain the appropriate level of clearance for the role specified.

Short-listed candidates will be submitted for vetting procedures before being formally offered the position. This process can take 6-8 weeks.

If this role is of interest and you meet the above criteria, then please apply immediately.

• Job Title:
  
  Senior Technical Architect
• Company: SOLOS Consultants Ltd
• Location:
  
  Milton Keynes, Buckinghamshire
• Posted:
  Feb 11th 2026
• Closes:
  Mar 14th 2026
• Sector:
  Military, Emergency & Government
• Contract:
  
  Contract
• Hours:
  
  Full Time